Mobile Screening Apparatus With Segmented Multi-Deck Feeding
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Solution Overview
Problem
Mobile screening apparatuses in quarries and surface mining struggle to keep pace with larger crushing machines, leading to inefficiencies and increased setup time and costs due to the need for auxiliary screens and link conveyors, with existing designs limiting the capacity and effectiveness of top decks.
Innovation Solution
A mobile screening apparatus with a transfer conveyor assembly and a configurable chassis design that allows for multiple screen decks, including the option of four decks, and positions the motor and hydraulic pump assembly lengthwise, enabling efficient material distribution and reduced cross-contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a major feed bin is used to feed raw material onto the top deck, then the design maintains simplicity, but the production capacity cannot keep pace with larger crushing machines
Solution Approach 1:
The feed system is segmented into multiple feed bins (first feed bin and second feed bin) that can independently feed different decks. This allows material to be distributed to multiple decks simultaneously, increasing overall production capacity without requiring a single oversized feed bin, thus balancing productivity improvement with design complexity management.
Solution Approach 2:
The system transitions from feeding material to a single top deck in one dimension to feeding multiple decks (top deck and intermediate deck) simultaneously in another dimension. This multi-level feeding approach increases production capacity by utilizing vertical space and multiple screening levels concurrently.
2Reliability
If auxiliary screens and link conveyors are added to achieve better material transition, then screening effectiveness improves, but setup time and costs increase
Solution Approach 1:
The system merges the functions of multiple screens and conveyors into an integrated mobile screening apparatus with multiple decks and built-in conveyors. By combining these functions into a single unified system rather than separate auxiliary components, screening effectiveness is maintained while reducing setup time and complexity.
Solution Approach 2:
The mobile screening apparatus is designed as a universal system that can handle multiple screening operations simultaneously across different decks. The integrated design provides multi-functionality, eliminating the need for separate auxiliary screens and link conveyors, thereby reducing setup time while maintaining screening effectiveness.
3Adaptability or versatility
If link conveyors are added between crushers and screen apparatus for recycling, then material circulation is enabled, but additional power and fuel usage occurs
Solution Approach 1:
The recycling capability is merged into the main screening apparatus by integrating conveyors and multiple decks into a single system. This eliminates the need for separate link conveyors between crushers and screen apparatus, enabling material circulation while reducing the number of moving components and associated power and fuel consumption.
4Productivity
If multiple screen decks are configured to increase capacity, then production capacity improves, but cross-contamination between decks may increase
Solution Approach 1:
The screening system is segmented into separate decks (top deck and intermediate deck) with independent feed bins and discharge conveyors. This segmentation allows each deck to process specific material sizes independently, increasing production capacity while minimizing cross-contamination through physical separation and dedicated material flow paths.
Solution Approach 2:
Each deck is designed with local quality characteristics, including dedicated feed bins and discharge conveyors tailored to specific screening requirements. This localized design allows optimal screening performance for each deck while preventing cross-contamination, as each section is optimized for its specific function rather than being part of a uniform system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances production capacity by up to 30% and reduces maintenance downtime while allowing for various configurations, including the use of multiple crushers and conveyors, thereby optimizing the screening process and minimizing contamination.
Implementation Method 1
the decks vibrate to enhance the screening process
Implementation Method 2
a centrally located power plant that is used to drive a hydraulic system for driving tracks, vibratory screen motors and possibly other equipment
Implementation Method 3
the decks are usually horizontal or inclined for gravity-assistance
Data Source
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AI summary
A mobile screening apparatus includes a support chassis. The support chassis is configured for carrying at least one screening assembly having a top screen deck and at least one further screen deck below the top screen deck. At least at least one primary feed mechanism is configured for arrangement in communication with any one or more of the top and further screen decks to feed material to be screened onto said any one or more of the top and further screen decks.